Cloth-clamp for tentering-machines.



1.1. HOEY.

CLOTH CLAMP FOR TENTERING MAIIHINES.

APPLICATION FILED DEC. 2 I915.

Patented July 18, 1916.

UNITED STATES PATENT OFFIQE.

JOHN J. Irony, or r novrnmycn, nnonn rsnnnn.

QLOT-PH-QLAMP roe T Ea NG-MMHI'NES- S pecification of Letters l atent.

Patent July 8 9 Application filed December 2, 1915. Serial No. 64,263.

hingedly mountinglthe movable jaw on the clip.

The object of my improvement is to provide for hinging the swinging insuch manner that it may be more conveniently and easily removed forrepair or replace ment without requiring the disconnectionof the clipfrom the chain of which it forms a part, or without necessitating-movingthe chain to bringithe clip into position on the end sprocketswheel sothat it can -be,dis-

placed from alinement withthe otherclips in the series.

The manner and means for carrying out my improvement are fully describedin the following specification, illustrated bythe accompanying drawings,in whi h like 'reference characters designatelike parts.

In the drawings Fig1 re 1 is a side, elevation of my improvedtenter-clipshowingthe arrangement for hinging the movable jaw on theframe of the clip; Fig. 2, afront elevation of the same illustratingthemanner in which the clips are linked [together in an endless chain;Figs. 3"and 4, detail views showing ,amodification in the form of thejaw-hinging meanstand -'Figs.,5 and .6, detail views showing a stillfurther modification ofthe invention.

Referring to the drawings, the main .elements, of the clip;hereillustrated are of well known construction as generally employed in thisart,-but.it is tobe understood that my. improvement is. adaptable-tootheriforms of clips with only slight modificationsin its structure. Theclip here shown comprises the main frame C formed with atbase por-'tion'having a lower shelf-1ikejaw-member J and two upstanding arms 0,0overhanging the top of the jaw. Ateither side; of the frame Caresuitable lugs or tongues 25,2? adapted to be ,fitted in .malerand-femalefashion to correspondinglyformed tongues on adjacent clips tov ink themtog her 1 as an necessitates the completelongitudinal withendless chainas shown in Fig. 2. The clips are coupled together ,by means of suitablehlngepins 79,19, etc, and their under portions are provided withopenings 0 adapted to receive the teeth of the sprocket-wheels around.which the chain of clips travels.

Usually two sprockets areprovided for each,

chain, arranged at opposite ends of the frame on which the chainjtravels in the well known nne usually empl y d i n w ing-machines Pivotedat the ends of the overhanging arms a, c is the movable jaw B arrangedin pendantrelation to the main frame of the clip with its lower,sharpened edge Z2 adapted tobear outhe top of the fixed jaw J. Thefabric isinsertedbetween the jaws J andBas it is pulled out away fromthe clip ts se'lvage is gripped and held by the dogging action of themovable jaw B in the usual manner. The movable jaw ;B is

f rme w t ups and s arso ns 6 adapted to straddle theends of the arms c,c, to be hinged thereto by means of a -p vot-1 n o 7 B n r. ed t re h ugere fo n all rrangemen of ip generally employed intheart the pivot-pinis merely inserted, through suitable holes in the armso, 0 and lugs b, bandheld in place y a Qtt r'-p n.' her s m l r a t ni g- Such a a ngeme hdrawal of the pivotpin beforethe jaw 13 can be removed andthereforerequiresthat theclip be displaced from alinement with the other clips inthe chain. It will be noted from Fig. 2 that theclipsare linked togetherin close relation so that when the chain is stretched out along theframe of the machine there is not sufficient room between the clips, todraw out one of the pivot pins whichholdthe movable jaws in place. It 3is frequently necessary to remove the Y jaws for grinding-their,operating edges, .or to replace them when they become. too badly 'wornor-broken. VVith theusual arrangement of pivoting-means, as abovedescribed,

whe ib ome .l ces eryt0 tak u n of the jaws either the whole clip mustbe detached from the Chainor else the chain nn st be-traveled along-theframe until the clip to bejoperated upon is'brought into.

position on the end-sprocket. Tha is to say, the usual practi'cefis. totravel the chain along therframe until the clip to be repaired K d-'9 inthe. endspmcket, and this-Will cause it to be rocked to displaceit fromalinement with its adjacent clips. This allows the pivot-pin to be slidits whole length out from the bearings, but often the clip whichrequires repairing is at a considerable distance from the end-sprocketwhen the chain stops and this necessitates starting the machine up againor turning the sprockets by hand. This is often very inconven ientespecially if the cloth is in the machine, and in any event theoperation requires considerable time and effort which it is desirable toavoid. To obviate this necessity of displacing the clips from alinementto allow the removal of the pivot-pin I have devised an ingenious methodof mounting the pin in its hearings to provide for its lateralwithdrawal as next described:

Referring to Fig. 2, the right-hand arm 0 of the clip C is here shown asbeing slotted at s on its front to allowthe lateral displacement of oneend of the pivot-pin or rod R after its opposite end has been withdrawnfrom the other bearing 0. As illustrated in Figs. 1 and 2 the bearinghole in the arm 0 is boredv somewhat larger than the diameter of the rodR and a bushing D is inserted in the bore to receive the rod. To holdthe rod R in place in its bearings the arm 0, bushing D and rod R arepro-' vided with alining holes it through which a cotter-pin E isinserted, see left end of Fig. 2.

Fig. 2 illustrates three adjacent clips linked together in alinementwith the central clip C shown with its jaw B ready for detaching. Theremoval ofthe jaw B is accomplished as follows: The cotter-pin E isfirst drawn out from the hole 71 and the bushing D is then slid to theleft beyond the side of the bearing 0". The rod R is next drawn out tothe right, as shown in connection with the central clip C in Fig. 2, tobring its left-hand end clear of the bearing 0. The pin or rod R can nowbe drawn out laterally through the slot 8 in the arm 0 and the jaw B isthus removed clear of the frame of the clip C. To replace the jaw B itis only necessary to slide the rod R through the lug b of the jaw B andthrough the bushing D, and to then slip the rod through the slot 8 inthe bearing 0. The several bearings 6 0, 0 and D are then brought intoalinement While the rod R is pushed through the bearing 0 and lug Z2 andthe bushing D slid into the enlarged hole 0 in the bearing 0'. Byturning the rod and bushing their transverse holes may be brought intoalinement with the hole in the bearing a to allow the insertion of thecotter-pin E to secure the several parts in place.

In Figs. 3 and 4 I have illustrated a somewhat simpler and preferredform of the invention as now. described: In this modification thebushing D is dispensed with and the bearings 0 and c are both bored tothe same diameter to adapt the sliding o1 turning in the beaimgs c, o bymeans of the cotter-pin E, as before described, and to remove the rod itis only necessary to withdraw the pin to allow the rod to be slid to theright. As soon as its left-hand end is drawn clear of the bearing 0 itsflatted portions 1", 1' will have been brought into alinement wit-h thebearing (1 and the rod can then be drawn out through the slot 8'.Instead of having its side flatted off at 1", 7' the rod R might beturned down to a less diameter at this point to allow for its withdrawalthrough the slot 8.

In Figs. 5 and 6 I have illustrated still. another embodiment of theinvention in which the parts are constructed as follows: As shown inFig. 5 both bearings c, c are slotted on their sides at .9 s and the rodR is formed with two flatted portions 1", r and r 1' at its ends. Withthis arrangement the rod may be slipped into and out from the bearings0, 0 without any endwise movement thereof. WVith the rod R in place inits bearings as shown in Fig. 5 it is turned to bring its roundedportions in position at the top and bottom of the bores in the arms 0, 0and its transverse hole 71. will then aline with the vertical hole It inthe arm 0, see Fig. 5. The cotter-pin E is then pushed down through theholes h, h to prevent the rod from turning and to also secure it fromlongitudinal displacement. By withdrawing the cotter-pin the rod may beturned to allow for its lateral movement out through the slots s 8 Whilethis arrangement provides, possibly, the most convenient method forremoving the rod R and the jaw B, in some respects it is not aspractical as the construction shown in Figs. 3 and 4 because the rod'isweakened somewhat by the flattening of its sides and furthermore doesnot have as full a bearing in the arms 0, 0'. However, it will be seenthat this construction accomplishes the purpose desired and therefore itmay be substituted for either of the other forms of the invention asshown.

It will be observed that with any one of the above describedarrangements the movable jaw B may be removed from the clip C Withoutwithdrawing the pin or rod It clear through the bearings 0, 0. That isto say, the rod may be freed from its bearings in the clip by a lateraldisplacement without interference with the adjacent clip in the chain.As shown in Fig. 2 the arrangement of the clips when linked together inthe chain is such as to provide sufficient clearance for a slightmovement of the rod B, so that it is not necessary to displace one clipfrom alinement with the other. My improvement therefore provides foreasy and convenient removal and replacement of the jaws of the clipswithout disconnecting the latter from the chain or without requiring theslow, laborious work of traveling the chain to bring the clip to beoperated upon into position on the end-sprocket.

Various modifications other than those here shown might be made in theconstruetion and arrangement of the parts of my improved device withoutdeparting from the spirit or scope of the invention.

Therefore, without limiting myself to the exact embodiment shown, what Iclaim is 1. In a cloth-clamp for tentering-machine chains, thecombination with the frame of the clamp provided with bearings, of ahinge-pin mounted in said bearings, means to allow the hinge-pin to bewithdrawn laterally from the bearings, and a movable jaw pivoted on. thehinge-pin to adapt it to be removed therewith for repair or replacement.

2. In a cloth-clamp for tenter-chains, the combination with the frame ofthe clamp provided with bearings having alining bores, of a hinge-pinmounted in said bearings to allow for its lateral withdrawal from theframe, a movable j aw-member pivoted to swing on the pin, and means tosecure the hinge-pin against displacement from its bearings.

3. In a cloth-clamp for tenter-chains, the

combination with the frame of the clamp provided with a fixed jaw, of ahinge-pin mounted in a slotted bearing on the frame to allow it to bewithdrawn laterally therefrom, means to securethe pin againstdisplacement from the bearing, and a movable jaw pivoted on the pin toadapt it to cooperate with the fixed jaw to clamp the cloththereagainst. I

4. In a cloth-clamp for tenter-chains, the combination with the framethereof provided with arms having bearings at their ends, and one ofsaid bearings slotted through its side, of a hinge-pin mounted in saidbearings and formed with a portion of reduced thickness to adapt it tobe withdrawn through the slot in the. bearing, means to secure the pinagainst displacement from its bearings, and a movable jaw pivoted on thehinge-pin to adapt it to swing on the frame. V

5. In a cloth-clamp for tentering-machines, the combination with afixed-jaw member and a movable-jaw cooperating therewith, of hearings onthe fixed-j aw member provided with alining bores and one of saidbearings having a transverse slot cut through its side, of a hinge-pinextending through the hearings to support the movable jaw in pivotalrelation to the fixed jaw, means for securing the hinge-pin againstdisplacement from the bearings, and means whereby the hinge-pin may bewithdrawn laterally from the slotted bearings after its end has beenslidfree from the other bearmg.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN J. HOEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). 0.

